pejoration vs ravage

pejoration

noun
  • The act or process of becoming worse; worsening or degeneration. 

  • The process by which a word acquires a more negative meaning over time. 

ravage

noun
  • Depredation or devastation. 

  • Grievous damage or havoc. 

verb
  • To devastate or destroy something. 

  • To have vigorous sexual intercourse with. 

  • To pillage or sack something, to lay waste to something. 

  • To rape. 

  • To wreak destruction. 

How often have the words pejoration and ravage occurred in a corpus of books? (source: Google Ngram Viewer )